THE CANADIAN ENTOMOLOGIST 227 



about twice its diameter, while in M. spinosa these two segments 

 are free, the last having a length only about three-fourths greater 

 than its diameter. There are doubtless other differences in the 

 similar appearing midges. 



Male. — Length 1.5 mm. Antennae moderately short, tapering, 

 the basal segment dark brown, the others light brown; 9 sessile 

 segments, the second greatly enlarged, the ninth plainly fused 

 with the eighth, and with a length about twice its diameter. Palpi : 

 first segment subquadrate, with a length o\'er twice its diameter, 

 the second a little longer and more slender than the first, the third 

 one-half longer than the second, more slender, the fourth twice as 

 long as the third, slightly expanded distally. Body a nearly 

 uniform brownish black, the submedian lines of the mesonotum 

 sparsely haired. Wings moderately large, costa, subcosta and the 

 third vein yellowish brown, whitish basally. Halteres yellowish 

 transparent. Coxae dark brown. Legs mostly fuscous yellowish, 

 the pulvilli as long as the moderately stout, slightly curved, finely 

 pectinate claws. 



Genitalia: basal clasp segment moderately stout, long; terminal 

 clasp segment short, swollen basally, somewhat recurved and 

 thickly setose apically; dorsal plate moderately long, triangularly 

 emarginate, the lobes narrowly rounded apically; ventral plate long, 

 apically roundly and obliquely truncate and thickh- setose. 



Female. — Length 1 mm. Antennae yellowish brown, the 

 second segment only moderately enlarged, the fourth with a length 

 about three-fourths its diameter and with thick groups of short, 

 stout spines subapically; terminal segment produced, with a length 

 nearly twice its diameter, somewhat swollen basally and broadly 

 rounded apically. Body a nearly uniform brownish black. Ovi- 

 positor short, the lobes yellowish, biarticulate, the distal segment 

 roundly oval and thickly setose, minor lobes thickly setose, tri- 

 angular, narrowly rounded apically. Type Cecid 1585. 



Porricondyla wellsi, n. sp. 



The midge described below was taken by Mr. D. B. Young 

 on a window at Wells, N. Y., July 5, 1914. It is easily distinguished 

 from allied forms by the greatly produced stems of the flagellate 



